Hair conditioning with blended silicones

ABSTRACT

A cosmetic composition for use in the treatment of hair. The cosmetic composition contains a conditioning agent and the improvement resides in the conditioning agent being a mixture of (i) a silicone polyether and (ii) an amine functional siloxane polymer. The amine functional siloxane polymer has the formula: 
     
         R.sub.3-z &#39;Q.sub.z SiO R.sub.2 &#39;SiO!.sub.x  R&#39;QSiO!.sub.y SiQ.sub.z 
    
      R 3-z  &#39;. 
     A method of treating hair is also described in which the mixture is applied to hair for the purpose of improving wet and dry combing and imparting durable conditioning benefits to the hair.

BACKGROUND OF THE INVENTION

This invention is directed to the conditioning of hair with acomposition which includes the combination of a silicone polyether andan amine functional polysiloxane fluid. Such blends have been found toimpart improved conditioning benefits to the hair.

Hair preparations are compositions which are employed on the scalp orhair. The most important hair preparations are shampoos, conditioningproducts, colorants, hairstyling preparations including setting lotionsand hairsprays, and permanent wave preparations.

Shampoos are mild cosmetic products for cleaning the hair and scalp.Hair becomes soiled due to skin flakes, sebum, perspiration, dust, andresidues from sprays, lotions and conditioning agents. Shampoos aredesigned to leave the hair clean, pliable, lustrous, possessing apleasant odor, and easy to untangle, comb, manage, and style. Theprincipal ingredient of a shampoo is a surfactant which functions torelease dirt from the hair and to transport it to the aqueous medium.Since consumers equate lathering with cleanliness, anionic surfactantssuch as alkyl sulfates and sulfonates are preferred because of theirhigh lather. Numerous other constituents are included in shampoos suchas thickeners to prevent the shampoo from running down the face into theeyes, opacifiers to provide a rich pleasing pearlescent appearance,buffers to adjust the pH of the shampoo to a value which is gentle tothe skin, and fragrances to impart a pleasant aroma to the washed hairfollowing rinsing. Most frequently, shampoos are marketed as clearproducts although gels having a higher viscosity and packaged in tubes,and pearlescent compositions are available.

With the advent of consumer trends toward daily hair washing,conditioning shampoos have emerged which are designed to render the haireasy to comb and tangle free in the wet state, as well as glossy andsoft when dry. Such conditioning is provided by the inclusion in theshampoo of an organic cationic polymer which upon rinsing produces athin film on the hair. This film functions as a lubricant when the hairis wet and prevents static charge and "flyaway" when the hair is dry.

Conditioning may also be provided by hair conditioning products designedsolely for that purpose such as rinses, mousses, aerosols, and pumpsprays, which conditioners are applied following shampooing. Theseconditioning products are rinsed from the hair a short time followingtheir application. Such conditioners prevent excessive split ends andother mechanical hair damage and roughening, and seek to neutralize theadverse effects which hair undergoes due to humidity, temperature,exposure to sunlight, frequent washing, combing, and brushing, andcosmetic treatments such as bleaching, dyeing, and waving.

The present invention provides a viable alternative to hair conditioningwith cationic organic polymers, and provides an organosiliconconditioning additive which not only achieves conditioning on the levelobtained with organic conditioners, but which in addition results in anunexpected "synergy" obtained when certain silicone polymers arecombined. Not only do the blended silicones provide improved wetcombining, but they in addition impart durable and long lastingconditioning benefits, in comparison to single silicones traditionallynoted for their conditioning effect.

SUMMARY OF THE INVENTION

The invention is directed to the treatment and conditioning of hair witha cosmetic composition which includes as a conditioning agent for thehair a mixture of a silicone polyether and an amine functional silicone.Such mixtures have been found to improve the wet combing characteristicsof hair while at the same time providing durable and more efficaciousconditioning effects.

The invention is also directed to a composition in the form of a mixtureof the silicone polyether and the amine functional silicone, whichmixture is of general application in the personal care field includingtreatment of the hair and skin. Aesthetically, the mixture will rub-outto a smooth soft feel. Such perception is of importance in the consumeroriented personal care market.

These and other features, objects, and advantages, of the herein definedpresent invention will become more apparent from a consideration of thefollowing detailed description thereof.

DETAILED DESCRIPTION OF THE INVENTION

The amine functional siloxane polymer employed in the blends inaccordance with the present invention has the formula:

    R.sub.3-z 'Q.sub.z SiO R.sub.2 'SiO!.sub.x  R'QSiO!.sub.y SiQ.sub.z R.sub.3-z '

wherein R' denotes an alkyl group of 1 to 4 carbons or a phenyl groupwith the proviso that at least 50 percent of the total number of R'groups are methyl; Q denotes an amine functional substituent of theformula --R"Z wherein R" is a divalent alkylene radical of 3 to 6 carbonatoms and Z is a monovalent radical selected from the group consistingof --NR₂ '", and --NR'"(CH₂)_(n) NR₂ '"; wherein R'" denotes hydrogen oran alkyl group of 1 to 4 carbons, and n is a positive integer having avalue of from 2 to 6; z has a value of 0 or 1; x has an average value of25 to 10,000; y has an average value of 0 to 100 when z is 1, y has anaverage value of 1 to 100 when z is 0; with the proviso that in allcases y has an average value that is not greater than one tenth theaverage value of x.

Suitable R' groups are represented by and may be independently selectedfrom among methyl, ethyl, propyl, isopropyl, butyl, isobutyl, andphenyl, with the proviso that at least fifty percent of the R' groupsare methyl.

The alkylene radicals represented by R" may include trimethylene,tetramethylene, pentamethylene, --CH₂ CHCH₃ CH₂ --, and --CH₂ CH₂ CHCH₃CH₂ --. Siloxanes where R" is a trimethylene or an alkyl substitutedtrimethylene radical such as --CH₂ CHCH₃ CH₂ --, are preferred.

Alkyl groups of 1 to 4 carbon atoms as represented by R'" includemethyl, ethyl, propyl, isopropyl, butyl, and isobutyl.

Useful Z radicals include the unsubstituted amine radical --NH₂, alkylsubstituted amine radicals such as --NHCH₃, --NHCH₂ CH₂ CH₂ CH₃, and--N(CH₂ CH₃)₂ ; and aminoalkyl substituted amine radicals such as--NHCH₂ CH₂ NH₂, --NH(CH₂)₆ NH₂, and --NHCH₂ CH₂ CH₂ N(CH₃)₂.

When z is zero, the silicone polymer has only pendent amine functionalsubstituents in the polymer chain. When z is one, the silicone polymermay have only terminal amine functional substituents or both terminaland pendent amine functional substituents in the polymer chain.Preferably, x may vary from a value of 25 to 1000, and y may vary fromzero to 100 when z is one and from one to 100 when z is zero. Mostpreferably, the value of x+y is in the range of about 50 to 1000.

The trisiloxane polyether of the present invention is a compound havingthe formula: ##STR1## wherein R^(a) is an alkyl group of one to sixcarbon atoms; R^(b) is a linking group and a radical selected from thegroup consisting of --O--, --C_(m) H_(2m) --, --C_(m) H_(2m) O--,--C_(m) H_(2m-2) --, --C_(m) H_(2m-2) O--, and --C_(m) H_(2m) CO₂ --;R^(c) is a terminating radical which can be hydrogen, an acyl group, anaryl group, or an alkyl group of one to six carbon atoms; m has a valueof two to eight; p and s have values such that the oxyalkylene segment--(C₂ H₄ O)_(p) --(C₃ H₆ O)_(s) -- has a molecular weight in the rangeof 250 to 5,000; the segment having fifty to one hundred mole percent ofoxyethylene units --(C₂ H₄ O)_(p) -- and zero to fifty mole percent ofoxypropylene units --(C₃ H₆ O)_(s) --.

Preferably, R^(a) and the terminating radical R^(c) are hydrogen,acetyl, or methyl groups; m is preferably three or four whereby thelinking group R^(b) is most preferably the radical --(CH₂)₃ --O--; andthe values of p and s are such as to provide a molecular weight of theoxyalkylene segment --(C₂ H₄ O)_(p) --(C₃ H₆ O)_(s) -- of between 1,000to 1,500. Methods of making such silicone polyether compounds are knownin the art, and are described in detail for example, in the volume"Chemistry and Technology of Silicones", Walter Noll, Academic PressInc., 1968, Pages 373-376.

The oxyalkylene segment --(C₂ H₄ O)_(p) --(C₃ H₆ O)_(s) -- may consistof only oxyethylene units --(C₂ H₄ O)_(p) -- or combinations ofoxyethylene units --(C₂ H₄ O)_(p) -- and oxypropylene units --(C₃ H₆O)_(s) --.

The linking group R^(b) between the silicon atom and the oxyalkylenesegment may provide for a silicon-oxygen bond or a silicon-carbon bond,most preferably a silicon-carbon bond. In some instances it may bedesirable to employ unsaturated linking groups such as the radical--C_(m) H_(2m-2) --, and the radical --C_(m) H_(2m-2) O--.Representative of such unsaturated linking group radicals R^(b) are--CH═CH--C(CH₃)₂ -- and --CH═CH--C(CH₃)₂ --O--.

The trisiloxane polyether of the present invention may in alternateembodiments take the form of an endblocked trisiloxane polyether inwhich the linking group R^(b), the oxyalkylene segments, and theterminating radical R^(c) occupy positions bonded to the ends of thetrisiloxane chain. Such alternate forms may be represented by thefollowing formula in which the various groups, radicals, segments, andintegers, have the same meaning as defined above: ##STR2##

In some applications, it may be desirable to combine other organosiliconcompounds with the amine functional silicone and the trisiloxanepolyether, in which case a volatile silicone or a silicone gum would beappropriate.

The volatile silicone is appropriately a low viscosity methylsiliconefluid. The volatile low viscosity methylsilicone fluid corresponds tothe average unit formula (CH₃)_(a) SiO.sub.(4-a/2) wherein a is aninteger having an average value of from two to three. The methylsiliconefluid contains siloxane units joined by Si--O--Si bonds. Representativeunits are (CH₃)₃ SiO_(1/2), (CH₃)₂ SiO_(2/2), (CH₃)SiO_(3/2), andSiO_(4/2). These units are present in molar amounts such that there isan average of from about two to three methyl groups per silicon atom inthe methylsilicone fluid, whereby the fluid has a viscosity of less thanabout one hundred centistokes measured at twenty-five degreesCentigrade.

The methylsilicone fluid contains dimethylsiloxane units and optionallytrimethylsiloxane units. Preferably, the methylsilicone fluid has aviscosity of less than about ten centistokes, and can be eithercyclopolysiloxane compounds of the general formula (CH₃)₂ SiO!_(x) orlinear siloxane compounds of the general formula (CH₃)₃ SiO (CH₃)₂SiO!_(y) Si(CH₃)₃. In both formulas, x is an integer having a value offrom three to ten, and y is an integer having a value of from zero toabout four.

Such volatile silicones have boiling points generally less than abouttwo hundred-fifty degrees Centigrade, and viscosities preferablygenerally less than about ten centistokes measured at twenty-fivedegrees Centigrade. Most preferably the viscosity is between 0.65 to 5.0centistokes. The cyclopolysiloxane compounds have been assigned theadopted name "CYCLOMETHICONE" by The Cosmetics, Toiletries and FragranceAssociation, Inc., Washington, D.C. (CTFA). Both the cyclopolysiloxanesand the linear siloxanes are clear fluids, and are essentially odorless,nontoxic, nongreasy and nonstinging. Cosmetically, these volatilemethylsilicone fluids are nonirritating to skin, and exhibit enhancedspreadability and ease of rub-out when applied. Once applied, thematerials evaporate leaving behind no residue.

Methylsilicone fluids which are operable in accordance with the presentinvention leave substantially no residue after thirty minutes at roomtemperature when one gram of fluid is placed at the center of a No. 1circular filter paper having a diameter of 185 mm supported at itsperimeter in open room atmosphere. By methylsilicone fluid is meant acomposition containing two or more silicon atoms, all of which arebonded by way of at least one oxygen atom to at least one other siliconatom and at least one methyl radical, each silicon valence not satisfiedby oxygen being satisfied by a methyl radical.

Representative methylsilicone fluids found to be especially useful inthe present invention are hexamethyldisiloxane which has a boiling pointof 99.5 degrees Centigrade and the formula Me₃ SiOSiMe₃ ;octamethyltrisiloxane which has a boiling point of 152 degreesCentigrade and the formula Me₃ SiOMe₂ SiOSiMe₃ ;hexamethylcyclotrisiloxane which has a boiling point of 133 degreesCentigrade and the formula (Me₂)SiO!₃ ; octamethylcyclotetrasiloxanewhich has a boiling point of 171 degrees Centigrade and the formula(Me₂)SiO!₄ ; and decamethylcyclopentasiloxane which has a boiling pointof 205 degrees Centigrade and the formula (Me₂)SiO!₅. Thesemethylsilicone fluids may be used alone, or as mixtures in combinationsof two or more of the individual fluids. Mixtures of the methylsiliconefluids will result in a volatile material having an evaporating behaviordifferent from any one of the individual methylsilicone fluids. Themethylsilicone fluids and their methods of preparation are known in theart, and such fluids are commercially available.

In some instances, it may be desirable to replace one or more of themethyl groups in the methylsilicone fluid with other groups. Thus, theremay be substituted groups such as alkyl radicals having two to twelvecarbon atoms; aryl radicals having six to ten carbon atoms; aminegroups; vinyl; hydroxy; haloalkyl groups; aralkyl groups; and acrylategroups, for example.

The polydiorganosiloxane gum suitable for use in the present inventionas an optional conditioning ingredient is a polydimethylsiloxane gumwhich can be represented by an average unit formula ##EQU1## where eachR is a methyl radical, a vinyl radical, a phenyl radical, an ethylradical or a 3,3,3-trifluoropropyl radical and a has an average value of1.95 to 2.005 inclusive. Since the polydiorganosiloxane gums areessentially polydimethylsiloxane gums, at least 90 percent of the totalR groups are methyl radicals and the remaining R groups are vinyl,phenyl, ethyl of 3,3,3-trifluoropropyl. Small amounts of other groupscan be present such as 1 or 2 percent of the total R, where such groupsare other monovalent hydrocarbon groups, such as propyl, butyl, hexyl,cyclohexyl, beta-phenylethyl, octadecyl and the like; other halogenatedmonovalent hydrocarbon radicals, such as chloromethyl, bromophenyl,α,α,α-trifluorotolyl, perfluoroheptylethyl, dichlorophenyl and the like;cyanoalkyl; alkoxy, such as, methoxy, propoxy, ethoxy, hexoxy and thelike; ketoxime; halogen; hydroxyl; aminoalkyl; and acyloxy. The groupswhich are present in small amounts are considered as incidental and notproducing any significant characteristic changes of thepolydimethylsiloxane gum.

The polydiorganosiloxane gums suitable for the present invention areessentially composed of dimethylsiloxane units with the other unitsbeing represented by monomethylsiloxane, trimethylsiloxane,methylvinylsiloxane, methylethylsiloxane, diethylsiloxane,methylphenylsiloxane, diphenylsiloxane, ethylphenylsiloxane,vinylethylsiloxane, phenylvinylsiloxane,3,3,3-trifluoropropylmethylsiloxane, dimethylphenylsiloxane,methylphenylvinylsiloxane, dimethylethylsiloxane,3,3,3-trifluoropropyldimethylsiloxane,mono-3,3,3-trifluoropropylsiloxane, aminoalkylsiloxane,monophenylsiloxane, monovinylsiloxane and the like.

The polydiorganosiloxane gums are well known in the art and can beobtained commercially, and are considered to be insolublepolydiorganosiloxanes which have viscosities greater than 1,000,000 cs.at 25° C., preferably greater than 5,000,000 cs. at 25° C.

These gums may be used alone as well as in admixture with one or morenon-volatile or volatile ingredients such as a cyclic silicone. Volatilecyclic silicones which may be employed are polydimethylcyclosiloxanesexemplary of which are octamethylcyclotetrasiloxane anddecamethylcyclopentasiloxane. The viscosity at 25° C. of the volatilecyclics is generally of the order of 2.5 to 6.0 cs. Such volatileingredients are generally represented by the formula (CH₃)₂ SiO_(x)where x is 3-8. When used in admixture with the gum, the level of thecyclic is generally of the order of about thirteen percent by weight.

The compositions of this invention may contain a surfactant selectedfrom the group consisting of anionic and amphoteric surfactants. Thesurfactant system should provide an acceptable level of foam on the hairand be capable of cleaning the hair, and may comprise one or more watersoluble detergents, i.e., an anionic or amphoteric surfactant. Suitableanionic detergents include sulfonated and sulfated alkyl, aralkyl andalkaryl anionic detergents; alkyl succinates; alkyl sulfosuccinates andN-alkyl sarcosinates. Especially preferred are the sodium, magnesium,ammonium, and the mono-, di- and triethanolamine salts of alkyl andaralkyl sulfates as well as the salts of alkaryl sulfonates. The alkylgroups of the detergents generally have a total of from about 12 to 21carbon atoms, may be unsaturated, and are preferably fatty alkyl groups.The sulfates may be sulfate ethers containing one to ten ethylene oxideor propylene oxide units per molecule. Preferably, the sulfate etherscontain 2 to 3 ethylene oxide units.

Typical anionic detergents include, among others, sodium lauryl sulfate,sodium lauryl ether sulfate, ammonium lauryl sulfate, triethanolaminelauryl sulfate, sodium C14-16 olefin sulfonate, ammonium pareth-25sulfate (ammonium salt of a sulfated polyethylene glycol ether of amixture of synthetic C12-15 fatty alcohols), sodium myristyl ethersulfate, ammonium lauryl ether sulfate, disodiummonooleamidosulfosuccinate, ammonium lauryl sulfosuccinate, sodiumdodecylbenzene sulfonate, triethanolamine dodecylbenzene sulfonate andsodium N-lauroyl sarcosinate. The most preferred anionic detergents arethe lauryl sulfates, particularly monoethanolamine, triethanolamine,ammonium and sodium lauryl sulfates. Sodium lauryl ether sulfate is alsovery suitable for use in the compositions of this invention.

Surfactants generally classified as amphoteric or ampholytic detergentsinclude, among others, cocoamphocarboxyglycinate,cocoamphocarboxypropionate, cocobetaine,N-cocamidopropyldimethylglycine, andN-lauryl-N-carboxymethyl-N-(2-hydroxyethyl)ethylenediamine. Othersuitable amphoteric detergents include the quaternary cycloimidates,betaines, and sultaines disclosed in U.S. Pat. No. 3,964,500. Thebetaines may have the structure:

    R.sup.1 R.sup.2 R.sup.3 N.sup.+ (CH.sub.2).sub.m COO.sup.-

wherein R¹ is an alkyl group having about 12 to 18 carbon atoms or amixture thereof, R² and R³ are independently lower alkyl groups having 1to 3 carbon atoms, and m is an integer from 1 to 4. Specific betainesuseful in the products of the invention are for examplealpha-(tetradecyldimethylammonio)acetate,beta-(hexadecyldiethylammonio)propionate, andgamma-(dodecyldimethylammonio)butyrate.

The sultaines may have the structure:

    R.sup.1 R.sup.2 R.sup.3 N.sup.+ (CH.sub.2).sub.m SO.sub.3.sup.-

wherein R¹, R², R³, and m are defined as above. Specific usefulsultaines are for example3-(dodecyldimethylammonio)-propane-1-sulfonate, and3-(tetradecyldimethylammonio)ethane-1-sulfonate.

The compositions of this invention may contain a nonionic surfactant.The nonionic surfactants of the present invention are selected from thegroup consisting of fatty acid alkanolamide and amine oxide surfactants.The fatty acid alkanolamides are nonionic surfactants obtained byreacting alkanolamines such as monoethanolamine, diethanolamine,monoisopropanolamine, or diisopropanolamine with a fatty acid or fattyacid ester to form the amide. The hydrophobic portion of the nonionicsurfactant is provided by a fatty acid hydrocarbon chain which generallyhas from 10 to 21 carbon atoms. The fatty acid alkanolamide surfactantsinclude, for example, fatty acid diethanolamides such as isostearic aciddiethanolamide, lauric acid diethanolamide, capric acid diethanolamide,coconut fatty acid diethanolamide, linoleic acid diethanolamides,myristic acid diethanolamide, oleic acid diethanolamide, and stearicacid diethanolamide; fatty acid monoethanolamides such as coconut fattyacid monoethanolamide; and fatty acid monoisopropanolamides such asoleic acid monoisopropanolamide and lauric acid monoisopropanolamide.

The amine oxides are well known nonionic surfactants usually obtained byoxidizing a tertiary amine to form the amine oxide. They are sometimesalso referred to as polar nonionic surfactants. Amine oxide surfactantsinclude, for example, the N-alkyl amine oxides such asN-cocodimethylamine oxide, N-lauryl dimethylamine oxide, N-myristyldimethylamine oxide, and N-stearyl dimethylamine oxide; the N-acyl amineoxides such as N-cocamidopropyl dimethylamine oxide andN-tallowamidopropyl dimethylamine oxide; and N-alkoxyalkyl amine oxidessuch as bis(2-hydroxyethyl) C₁₂₋₁₅ alkoxy-propylamine oxide. Thehydrophobic portion of the amine oxide surfactants is generally providedby a fatty hydrocarbon chain containing from 10 to 21 carbon atoms.

For purposes of this invention the alkanolamide and amine oxidesurfactants are preferred. In general, the fatty acid diethanolamidesand N-alkyl dimethylamine oxides are preferred for use in thecompositions. Especially preferred are the fatty acid diethanolamidesand N-alkyl dimethylamine oxides where the fatty hydrocarbon chaincontains from 10 to 18 carbon atoms. For example, especially preferrednonionic surfactants include lauric acid diethanolamide, N-lauryldimethylamine oxide, coconut acid diethanolamide, myristic aciddiethanolamide, and oleic acid diethanolamide.

Additional categories of surfactant materials may also be included suchas cationic and zwitterionic surfactants, and representative compoundsare set forth in detail in U.S. Pat. No. 4,902,499, issued Feb. 20,1990, which is considered to be incorporated herein by reference.

Other adjuvants may be added to the compositions of this invention suchas thickeners, perfumes, colorants, electrolytes, pH controlingredients, foam boosters and foam stabilizers, antimicrobials,antioxidants, ultraviolet light absorbers and medicaments. For example,it is sometimes preferred to employ a thickener in the compositions tofacilitate the hand application of the composition to the hair.Thickeners are preferably used in sufficient quantities to provide amore luxurious effect. For example, viscosities within the range of6,000 to 12,000 centistokes measured at 25° C. are usually suitable.

Suitable thickeners, include, among others, sodium alginate, gum arabic,polyoxyethylene, guar gum, hydroxypropyl guar gum, cellulose derivativessuch as methylcellulose, methylhydroxypropylcellulose,hydroxypropylcellulose, polypropylhydroxyethylcellulose, starch andstarch derivatives such as hydroxyethylamylose, and starch amylose,locust bean gum, electrolytes such as sodium or ammonium chloride,saccharides such as fructose and glucose, and derivatives of saccharidessuch as PEG-120 methyl glucose dioleate.

The perfumes which can be used in the compositions are the cosmeticallyacceptable perfumes. Colorants are used to confer a color to thecomposition and may generally be used. Although not required, it ispreferred to employ an acid to adjust the pH within the range of 5 to 9or more preferably within the range of 6 to 8 in the compositions ofthis invention. Any water soluble acid such as a carboxylic acid or amineral acid is suitable. For example, suitable acids include mineralacids such as hydrochloric, sulfuric, and phosphoric, monocarboxylicacids such as acetic acid, lactic acid, or propionic acid; andpolycarboxylic acids such as succinic acid, adipic acid and citric acid.

If for special purposes additional conditioners are desired, they may beadded. For example, any of the well-known organic cationic hairconditioning components may be added. Some cationic conditioningcomponents that may be used in the present invention to provide hairgrooming include quaternary nitrogen derivatives of cellulose ethers,homopolymers of dimethyldiallyl-ammonium chloride, copolymers ofacrylamide and dimethyldiallylammonium chloride, homopolymers orcopolymers derived from acrylic acid or methacrylic acid containingcationic nitrogen functional groups attached to the polymer via ester oramide linkages, polycondensation products ofN,N'-bis-(2,3-epoxypropyl)-piperazine or of piperazine-bis-acrylamideand piperazine, poly-(dimethylbutenylammoniumchloride)-α,ω-bis-(triethanol-ammonium) chloride, and copolymers ofvinylpyrrolidone and acrylic acid esters with quaternary nitrogenfunctionality. The above cationic organic polymers and others aredescribed in more detail in U.S. Pat. No. 4,240,450 which is herebyincorporated by reference to further describe the cationic organicpolymers. Other categories of conditioners such as monomeric quaternaryamine salts may also be employed.

A preservative may be required and representative preservatives whichmay be employed include about 0.1-0.2 weight percent of compounds suchas formaldehyde, dimethyloldimethylhydantoin,5-bromo-5-nitro-1,3-dioxane, methyl- and propyl para-hydroxybenzoates,and mixtures of such benzoates with sodium dehydroacetate, sorbic acid,and imidazolidinyl urea.

The compositions of the present invention may also be formulated toinclude dyes, colorants, reducing agents, neutralizing agents, andpreservatives, necessary for their application as permanent wave systemsor hair dyes, for example. The active formulation can be applied inseveral different forms including lotions, gels, mousses, aerosols, andpump sprays, for example, and as conditioners and shampoos. The activeingredient may include a carrier, and suitable carrier fluids for haircare formulations are water as well as, for example, such fluids asalcohols namely ethanol or isopropanol, hydrocarbons and halogenatedhydrocarbons as mineral spirits and trichloroethane, cyclic siloxanes,and aerosol propellants.

When the composition is intended for aerosol application, propellantgases can be included such as carbon dioxide, nitrogen, nitrous oxide,volatile hydrocarbons such as butane, isobutane, or propane andchlorinated or fluorinated hydrocarbons such as dichlorodifluoromethaneand dichlorotetrafluoroethane or dimethylether.

The concept of the present invention is illustrated in the followingexamples and tables in which a conditioning shampoo composition is setforth containing 10-80 percent by weight of a volatile carrier such aswater; 0.5-5.0 percent by weight of the silicone mixture of atrisiloxane polyether and an amine functional siloxane polymer; 7-35percent by weight of at least one surfactant; 1-7 percent by weight of afoam booster; less than about two percent by weight of a thickener; anda pH adjusting agent in an amount sufficient to establish a compositionpH of between about 5-7. Preferably, the amount of the silicone mixturepresent in the composition constitutes 5-50 percent by weight of theamine functional siloxane polymer based on the total weight of thesilicone mixture present in the composition.

EXAMPLE I

Seven shampoo base compositions were prepared containing the variousingredients shown in grams in Table I below. Phases A and B were eachprepared separately by mixing together the ingredients in each phaseuntil uniform. Phases A and B were combined, mixed together untiluniform, and the pH of the resulting shampoo base composition wasadjusted to a pH of 5-7 with citric acid.

In Table I, "Silicone 1" is used to indicate an amine functionalsilicone polymer according to the invention having the formula: ##STR3##in which Me represents the methyl radical. "Silicone 2" in Table Irepresents a trisiloxane polyether in accordance with the presentinvention.

The particular trisiloxane polyether "Silicone 2" used in this examplewas a compound conforming to the first generic formula set forthpreviously for the trisiloxane polyethers, in which R^(a) was a methylradical; R^(b) was a --CH₂ CH₂ CH₂ O-- radical; R^(c) was hydrogen; theinteger p had a value of twelve; and the integer s had a value of zero.

                  TABLE I    ______________________________________    SHAMPOO BASE FORMULAS (%)    Ingredients 1      2      3    4    5    6    7    ______________________________________    PHASE A:    Ammonium Lauryl                4.6    4.6    30.0 30.0 4.6  30.0 30.0    Sulfate (30%)    Water       10.0   10.0   64.6 64.6 10.0 65.0 65.0    Ammonium Chloride                .05    .05    1.5  1.5  .05  1.0  1.0    PHASE B:    Cocamide DEA                .47    .47    3.0  3.0  .47  3.0  3.0    Silicone 1  --     --     1.0  1.0  --   0.5  0.5    Silicone 2  --     0.15   --   1.1  --   --   1.0    ADDED TO A & B    Citric Acid 0.5    0.5    0.5  0.5  0.5  0.5  0.5    ______________________________________

In Table I, ammonium lauryl sulfate was employed as anionic surfactant.Ammonium chloride was used as the thickening agent. The foam booster wasa nonionic surfactant Cocamide DEA which is the CTFA adopted name forcoconut fatty acid diethanolamide. The volatile carrier was water, andas noted above, citric acid was used as the pH adjusting agent.

EXAMPLE II

Shampoo base compositions 1-7 shown in Table I were tested on hair forconditioning benefits. Shampoo base composition 4 and 7 contained thesilicone mixture as indicated in Table I and are representative of thepresent invention. Shampoo base composition 1 and 5 contained nosilicone as shown in Table I, and were used as the blank controlshampoos.

Hair tresses were shampooed with a commercial grade shampoo and dried.Each tress was wetted and 0.5 grams of the test shampoo was applied tothe tress. The test shampoo was worked into the tress for thirtyseconds. The tress was rinsed for thirty seconds with water anddetangled by passing the wide part of a comb through the tress one time.The tress was hung to dry and evaluated after the elapse of twenty-fourhours. The tress was evaluated for wet and dry combing, and dry feel.Subjective combing evaluations were conducted by volunteers who assignedvalues to each tress between one and 5, with one being the best and fivethe worst. The results for shampoo base compositions 1-7 are shown inTable II.

                  TABLE II    ______________________________________    Shampoo Base              Wet Combing                         Dry Combining                                    Dry Feel                                           PWC    ______________________________________    1         3          2          2      --    2         4          2.5        2      --    3         1.5        1.5        2      --    4         1.0        1.25       2      --    5         3.5        2          2      4    6         2.5        2.5        1.75   3    7         1.75       1.25       2      1.5    ______________________________________

PWC in Table II indicates for Shampoo Bases Nos. 5-7 an additionalevaluation for "Prolonged Wet Combining". The results for "Prolonged WetCombining" (PWC) obtained with the Shampoo Base No. 7 which isrepresentative of the present invention in comparison with Shampoo BasesNos. 5 and 6, reveals the dramatic improvement in conditioning which canbe obtained by formulating conditioning shampoos according to theconcepts disclosed herein. This is even more revealing when it isconsidered that Shampoo Base No. 7 contained less of the aminefunctional siloxane polymer than was present in Shampoo Base No. 4.

Regarding Shampoo Bases Nos. 1-4, the results of Table II reveal asynergy obtained in conditioning with compositions formulated accordingto the precepts of the invention. Thus, conditioning was better forShampoo Base No. 4 which contained both the amine functional siloxanepolymer and the trisiloxane polyether, than was obtained with either ofShampoo Bases Nos. 2 or 3 which contained only the trisiloxane polyetherand the amine functional siloxane polymer, respectively.

It will be apparent from the foregoing that many other variations andmodifications may be made in the compounds, compositions, and methodsdescribed herein without departing substantially from the essentialfeatures and concepts of the present invention. Accordingly, it shouldbe clearly understood that the forms of the invention described hereinare exemplary only and are not intended as limitations on the scope ofthe present invention as defined in the appended claims.

That which is claimed is:
 1. In a hair care composition containing anorganic anionic surfactant and an organosilicon conditioning additive,the improvement comprising the organosilicon conditioning additive beinga mixture of an amine functional silicone and a trisiloxane polyether,the amine functional silicone having the formula:

    R.sub.3-z 'Q.sub.z SiO R.sub.2 'SiO!.sub.x  R'QSiO!.sub.y SiQ.sub.z R.sub.3-z '

wherein R' denotes an alkyl group of 1 to 4 carbons or a phenyl groupwith the proviso that at least 50 percent of the total number of R'groups are methyl; Q denotes an amine functional substituent of theformula --R"Z in which R" is a divalent alkylene radical of 3 to 6carbon atoms and Z is a monovalent radical selected from the groupconsisting of --NR₂ '", and --NR'"(CH₂)nNR₂ '"; wherein R'" denoteshydrogen or an alkyl group of 1 to 4 carbons; and n is a positiveinteger having a value of from 2 to 6; z has a value of 0 or 1; x has anaverage value of 25 to 10,000; y has an average value of 0 to 100 when zis 1, y has an average value of 1 to 100 when z is 0; with the provisothat in all cases y has an average value that is not greater than onetenth the average value of x; the trisiloxane polyether having theformula: ##STR4## wherein R^(a) is an alkyl group of one to six carbonatoms; R^(b) is a linking group and a radical selected from the groupconsisting of --O--, --C_(m) H_(2m) --, --C_(m) H_(2m) O--, --C_(m)H_(2m-2) --, --C_(m) H_(2m-2) O--, and --C_(m) H_(2m) CO₂ --; R^(c) is aterminating radical selected from the group consisting of hydrogen, anaryl group, a acyl group, and an alkyl group of one to six carbon atoms;m is an integer having a value two to eight; p and s are each integershaving values such that the oxyalkylene segment --(C₂ H₄ O)_(p) --(C₃ H₆O)_(s) -- has a molecular weight in the range of 250 to 5,000; theoxyalkylene segment having fifty to one hundred mole percent ofoxyethylene units --(C₂ H₄ O)_(p) -- and zero to fifty mole percent ofoxypropylene units --(C₃ H₆ O)_(s) --.
 2. A composition according toclaim 1 in which R^(a) and the terminating radical R^(c) are methylgroups; m is three or four; and the values of p and s are such as toprovide a molecular weight of the oxyalkylene segment --(C₂ H₄ O)_(p)--(C₃ H₆ O)_(s) -- of between 250 to
 1000. 3. A composition according toclaim 2 in which the linking group R^(b) is the radical --(CH₂)₃ --O--.4. A composition according to claim 1 which further includes ten toeighty percent by weight of a carrier fluid; 0.5 to 5.0 percent byweight of the mixture of the amine functional silicone and thetrisiloxane polyether; seven to thirty-five percent by weight of ananionic surfactant; one to seven percent by weight of a thickener; and apH adjusting agent present in an amount sufficient to provide thecomposition with a pH of between five and seven.
 5. A method ofconditioning hair comprising applying to the hair the compositionaccording to claim
 1. 6. A method of conditioning hair comprisingapplying to the hair the composition according to claim 4.